Electric-wire supporter.



S. JEREMIAH. Y

ELECTRIC WIRE SUPPORTER. APPLICATION FILED 00112, 1908.

Patented July 11,1911.

' 5010272022 fireniak alimnws witness: QM

SOLOMON JEREMIAH, OF DUQUOIN, ILLINOIS.

ELECTRIC-WIRE SUPPORTER.

Specification of Letters Patent.

Application filed October 12, 1908.

Patented July 11, 1911. Serial No. 457,374.

To all 'whom it may concern.

Be it known that I, SOLOMON JEREMIAH, a citizen of the United States,residing at Duquoin, in the county of Perry, State of Illinois, haveinvented certain new and use ful Improvements in Electric-Wire Supports;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to devices for supporting electric wires, andmore particularly adapted for use in suspending trolley and other wiresin underground and similar 10- calities, and has for one of its objectsto simplify vand improve the construction and increase the efficiencyand utility of devices of this character.

Another object of the invention is to provide a simply constructeddevice of this character which may be readily applied in otherwiseinaccessible localities, and which may be connected and disconnectedfrom the supporting structure or body when required 'without destroyingany of the parts of the device.

Another object of the invention is to provide a simply constructeddevice of this character which may be readily used, and transferred fromone locality to another without detriment to the device.

With these and other objects in view the invention consists in a bolt orstock having a tapered enlargement at one end, and a divided shellinclosing the bolt and with tapered internal portions at one endcorresponding to and engaging the tapered portion of the bolt, the shelladapted to be inserted into a socket in the supporting body.

The invention further consists in a bolt having a tapered enlargement atone end and threaded at the other end, a divided shell inclosing thebolt and with tapered internal portions corresponding to and engagingthe tapered enlargement of the bolt, and a threaded sleeve engaging overthe threaded portion of the bolt and bearing against the shell.

The invention further consists in certain novel features of constructionas hereafter shown and described and specifically pointed out in theclaim, and in the drawings illustrative of the preferred embodiment ofthe invention.

Figure 1 is a side elevation of the improved device, with the supportingstructure in section. Fig. 2 is a bottom plan view of the same. Fig. 3is a longitudinal section on the line 38 of Fig. 2. Fig. 4 is aperspective view of the bolt portion of the device detached. Fig. 5represents the divided shell detached and in perspective.

The improved device comprises a bolt 10 which may be of any requiredsize and is formed with a tapered enlargement 11 at one end and threadedas shown at 12 at the other end.

Inclosing the bolt 10 is a divided shell in two parts 1415, the twoparts of the shell provided at one end with tapered interior portions1617 which are right angular in cross section and corresponding to andadapted to bear against the tapered portion 11 of the bolt from oppositesides, the exterior of the bolt thus conforming to the interior of thetwo part shell. The divided shell is designed to be inclosed in aclosely fitting socket within the structure from which the device is tobe suspended and this structure may be the ceiling of a building, theroof of a mine gallery, the roof of a tunnel or conduit, or any otherstructure or body in which the trolley wire or other device is to bearranged, and for the purpose of illustration the socket is shown formedin a body represented conventionally at 18.

When the device is to be employed the bolt is arranged between the twoparts of the socket with the tapered portion next to the internallytapered portions of the socket and extending beyond the same, so thatthe tapered portion of the socket does not engage in the taperedportions of the shell, the body portions of the shell thus bearing onlyagainst the body portion of the bolt. In this condition the shell havingthe bolt therein is thrust into the socket in the body 18 and the boltdrawn downwardly while the shell remains stationary, this movementcausing the tapered portion 11 of the bolt to engage in the taperedportions 16-17 of the shell and distending the same, and crowding itagainst the walls of the socket. This action locks the shell firmly inthe socket, and prevents it from dropping downwardly. As clearly shown,the bolt 10 is provided with a rectangular shaped head 11 which isformed integrally with the bolt, and each section 14 and 15 of the shellhaving semicircular smooth bolt receiving grooves formed along itslength and communicating with the tapered ends of the sections, wherebysaid semicircular portions of the sections of the sleeve will move fromthe bolt when the parts are bindingly drawn together longitudinally. Athreaded collar or sleeve 19 is then placed over the threaded portion ofthe bolt and rotated to draw the bolt forcibly downward into the shell,and thus impart a strong outward pressure against the parts of the shelland clamping them firmly in position.

The collar 19 is preferably externally threaded and adapted to receivethe insulator supporting elements, not shown, as they form no part ofthe present invention. The member 19 is provided with a squared externalportion 20 to receive the operating wrench or other implement. By thissimple means an etl'ectual suspending device is produced, which may bereadily applied, and which will firmly support the conductor wires,trolley wires, and similar devices. The improved device may be readilydetached when required. and inserted into a new socket, or transferredfrom one socket to another, as required.

The bolt and the shell members may be formed of any required size, toadapt the device to trolley wires of ditl'erent sizes, and to trolleywires employed for different purposes.

The tapered portion 11 of the bolt is preferably formed square, or anyother form than circular, and the tapered portions 1G-17 of the shellwill be formed to corre' spond thereto, as shown, so that the bolt willbe firmly held from rotary movement in the socket and in the shell.

The shell members are formed with their upper portions tlaring outwardlyand with tapered \l-shaped fins or ribs 21 upon the enlarged portions,the fins adapted to enter the supporting structure when the strains areapplied and thus increase the grip of the shell members.

What is claimed is- The herein-described electric wire supportercomprising a tubular cylindrical shell for insertion in a bore in thesupporting body and composed of two segmental sections, each having arib on its side at its inner end for engaging and embedding in the wallof said bore, said shell being turther provided at the inner end with anin- 'ardly tapering socket formed in the sections thereof when the sameare brought into relative position with respect to one another, thetapering ends of said sect-ions being substantially right angular incross section, a bolt extending through and movable longitudinally inthe bore of the shell thus formed and having a rectangular head providedwith inwardly tapering sides corresponding with the shape of the socketof the shell to force the sections thereof apartand embed the ribsthereof in the wall of the bore, whereby the grooved portions of thesections are forced outwardly from the bolt when the parts are drawntogether, and a collar screwed upon the outer end of the bolt and havinga rectangular reduced portion bearing against. the outer ends of thesections, said collar provided with means adapting an insulator to beattached thereto.

In testimony whereof, I atlix my signature in presence of two witnesses.

SOLOMON JEREMIAH. lVitnesses F. W. DISBURG, I. R. SPILMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

